Test Code MG_F Magnesium, Feces
Ordering Guidance
This test is only clinically valid if performed on watery specimens. In the event a formed fecal specimen is submitted, the test will not be performed.
Specimen Required
Patient Preparation: No barium, laxatives, or enemas may be used for 96 hours prior to start of, or during, collection.
Supplies: Stool containers - 24, 48, 72 Hour Kit (T291)
Container/Tube: Stool container
Specimen Volume: 10 g
Collection Instructions: Collect a very liquid stool specimen.
Specimen Type
FecalSpecimen Minimum Volume
5 g
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Fecal | Frozen (preferred) | 14 days | |
Refrigerated | 7 days | ||
Ambient | 48 hours |
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Reference Values
An interpretive report will be provided
Specimen Retention Time
7 daysPerforming Laboratory
Mayo Clinic Laboratories in RochesterCPT Code Information
83735
Day(s) Performed
Monday, Thursday